Base bottom



FIG. 1 is a perspective view of a base bottom showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front side view thereof, the rear side being a mirror image of the front side;

FIG. 4 is a right side view thereof, the left side being a mirror image of the right side; and,

FIG. 5 is a bottom view thereof. 

CLAIM The ornamental design for a base bottom, as shown and described. 